Index: ps/trunk/binaries/data/config/default.cfg
===================================================================
--- ps/trunk/binaries/data/config/default.cfg
+++ ps/trunk/binaries/data/config/default.cfg
@@ -157,8 +157,6 @@
 fps.toggle = "Alt+F"                  ; Toggle frame counter
 realtime.toggle = "Alt+T"             ; Toggle current display of computer time
 session.devcommands.toggle = "Alt+D"  ; Toggle developer commands panel
-session.gui.toggle = "Alt+G"          ; Toggle visibility of session GUI
-menu.toggle = "F10"                   ; Toggle in-game menu
 timeelapsedcounter.toggle = "F12"     ; Toggle time elapsed counter
 session.showstatusbars = Tab          ; Toggle display of status bars
 session.highlightguarding = PgDn      ; Toggle highlight of guarding units
@@ -295,6 +293,11 @@
 rotate.cw = RightBracket     ; Rotate building placement preview clockwise
 rotate.ccw = LeftBracket     ; Rotate building placement preview anticlockwise
 
+[hotkey.session.gui]
+toggle = "Alt+G"             ; Toggle visibility of session GUI
+menu.toggle = "F10"          ; Toggle in-game menu
+barter.toggle = "Ctrl+B"     ; Toggle in-game barter/trade page
+
 [hotkey.session.savedgames]
 delete = Delete               ; Delete the selected saved game asking confirmation
 noconfirmation = Shift        ; Do not ask confirmation when deleting a game
Index: ps/trunk/binaries/data/mods/public/gui/session/hotkeys/misc.xml
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/session/hotkeys/misc.xml
+++ ps/trunk/binaries/data/mods/public/gui/session/hotkeys/misc.xml
@@ -16,10 +16,14 @@
 		<action on="Press">openChat(g_LastChatAddressee);</action>
 	</object>
 
-	<object hotkey="menu.toggle">
+	<object hotkey="session.gui.menu.toggle">
 		<action on="Press">toggleMenu();</action>
 	</object>
 
+	<object hotkey="session.gui.barter.toggle">
+		<action on="Press">toggleTrade();</action>
+	</object>
+
 	<object hotkey="silhouettes">
 		<action on="Press">
 			var newSetting = !Engine.Renderer_GetSilhouettesEnabled();
@@ -72,8 +76,15 @@
 	</object>
 
 	<object hotkey="session.massbarter">
-		<action on="Press">updateSelectionDetails();</action>
-		<action on="Release">updateSelectionDetails();</action>
+		<action on="Press">
+			updateSelectionDetails();
+			updateBarterButtons();
+		</action>
+
+		<action on="Release">
+			updateSelectionDetails();
+			updateBarterButtons();
+		</action>
 	</object>
 
 	<!-- Find idle warrior - TODO: Potentially move this to own UI button? -->
Index: ps/trunk/binaries/data/mods/public/gui/session/menu.js
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/session/menu.js
+++ ps/trunk/binaries/data/mods/public/gui/session/menu.js
@@ -28,6 +28,26 @@
 // Shown in the trade dialog.
 const g_IdleTraderTextColor = "orange";
 
+/**
+ * Quantity of goods to sell per click.
+ */
+const g_BarterResourceSellQuantity = 100;
+
+/**
+ * Multiplier to be applied when holding the massbarter hotkey.
+ */
+const g_BarterMultiplier = 5;
+
+/**
+ * Barter actions, as mapped to the names of GUI Buttons.
+ */
+const g_BarterActions = ["Buy", "Sell"];
+
+/**
+ * Currently selected resource type to sell in the barter GUI.
+ */
+var g_BarterSell;
+
 var g_IsMenuOpen = false;
 
 var g_IsDiplomacyOpen = false;
@@ -565,39 +585,51 @@
 
 	g_IsTradeOpen = true;
 
-	var updateButtons = function()
+	let proba = Engine.GuiInterfaceCall("GetTradingGoods", g_ViewedPlayer);
+	let button = {};
+	let resCodes = g_ResourceData.GetCodes();
+	let currTradeSelection = resCodes[0];
+
+	let updateTradeButtons = function()
 	{
 		for (let res in button)
 		{
 			button[res].label.caption = proba[res] + "%";
 
-			button[res].sel.hidden = !controlsPlayer(g_ViewedPlayer) || res != selec;
-			button[res].up.hidden = !controlsPlayer(g_ViewedPlayer) || res == selec || proba[res] == 100 || proba[selec] == 0;
-			button[res].dn.hidden = !controlsPlayer(g_ViewedPlayer) || res == selec || proba[res] == 0 || proba[selec] == 100;
+			button[res].sel.hidden = !controlsPlayer(g_ViewedPlayer) || res != currTradeSelection;
+			button[res].up.hidden = !controlsPlayer(g_ViewedPlayer) || res == currTradeSelection || proba[res] == 100 || proba[currTradeSelection] == 0;
+			button[res].dn.hidden = !controlsPlayer(g_ViewedPlayer) || res == currTradeSelection || proba[res] == 0 || proba[currTradeSelection] == 100;
 		}
 	};
 
-	let proba = Engine.GuiInterfaceCall("GetTradingGoods", g_ViewedPlayer);
-	let button = {};
-	let resCodes = g_ResourceData.GetCodes();
-	let selec = resCodes[0];
 	hideRemaining("tradeResources", resCodes.length);
 	Engine.GetGUIObjectByName("tradeHelp").hidden = false;
 
 	for (let i = 0; i < resCodes.length; ++i)
 	{
+		let resCode = resCodes[i];
+
+		let barterResource = Engine.GetGUIObjectByName("barterResource[" + i + "]")
+		if (!barterResource)
+		{
+			 warn("Current GUI limits prevent displaying more than " + i + " resources in the barter dialog!");
+			 break;
+		}
+
+		// Barter:
+		barterOpenCommon(resCode, i, "barter");
+		setPanelObjectPosition(barterResource, i, i+1);
+
+		// Trade:
 		let tradeResource = Engine.GetGUIObjectByName("tradeResource["+i+"]");
 		if (!tradeResource)
 		{
-			 warn("Current GUI limits prevent displaying more than " + r + " resources in the trading goods selection dialog!");
+			 warn("Current GUI limits prevent displaying more than " + i + " resources in the trading goods selection dialog!");
 			 break;
 		}
 
 		setPanelObjectPosition(tradeResource, i, i+1);
 
-		let resCode = resCodes[i];
-		proba[resCode] = proba[resCode] || 0;
-
 		let icon = Engine.GetGUIObjectByName("tradeResourceIcon["+i+"]");
 		icon.sprite = "stretched:session/icons/resources/" + resCode + ".png";
 
@@ -611,10 +643,12 @@
 			"sel": Engine.GetGUIObjectByName("tradeResourceSelection["+i+"]")
 		};
 
+		proba[resCode] = proba[resCode] || 0;
+
 		let buttonResource = Engine.GetGUIObjectByName("tradeResourceButton["+i+"]");
 		buttonResource.enabled = controlsPlayer(g_ViewedPlayer);
-		buttonResource.onPress = (function(resource){
-			return function() {
+		buttonResource.onPress = (resource => {
+			return () => {
 				if (Engine.HotkeyIsPressed("session.fulltradeswap"))
 				{
 					for (let res of resCodes)
@@ -622,39 +656,152 @@
 					proba[resource] = 100;
 					Engine.PostNetworkCommand({"type": "set-trading-goods", "tradingGoods": proba});
 				}
-				selec = resource;
-				updateButtons();
+				currTradeSelection = resource;
+				updateTradeButtons();
 			};
 		})(resCode);
 
 		buttonUp.enabled = controlsPlayer(g_ViewedPlayer);
-		buttonUp.onPress = (function(resource){
-			return function() {
-				proba[resource] += Math.min(STEP, proba[selec]);
-				proba[selec]    -= Math.min(STEP, proba[selec]);
+		buttonUp.onPress = (resource => {
+			return () => {
+				proba[resource] += Math.min(STEP, proba[currTradeSelection]);
+				proba[currTradeSelection] -= Math.min(STEP, proba[currTradeSelection]);
 				Engine.PostNetworkCommand({"type": "set-trading-goods", "tradingGoods": proba});
-				updateButtons();
+				updateTradeButtons();
 			};
 		})(resCode);
 
 		buttonDn.enabled = controlsPlayer(g_ViewedPlayer);
-		buttonDn.onPress = (function(resource){
-			return function() {
-				proba[selec]    += Math.min(STEP, proba[resource]);
+		buttonDn.onPress = (resource => {
+			return () => {
+				proba[currTradeSelection] += Math.min(STEP, proba[resource]);
 				proba[resource] -= Math.min(STEP, proba[resource]);
 				Engine.PostNetworkCommand({"type": "set-trading-goods", "tradingGoods": proba});
-				updateButtons();
+				updateTradeButtons();
 			};
 		})(resCode);
 	}
-	updateButtons();
 
-	let traderNumber = Engine.GuiInterfaceCall("GetTraderNumber", g_ViewedPlayer);
-	Engine.GetGUIObjectByName("landTraders").caption = getIdleLandTradersText(traderNumber);
-	Engine.GetGUIObjectByName("shipTraders").caption = getIdleShipTradersText(traderNumber);
+	updateTradeButtons();
+	updateTraderTexts();
+
 	Engine.GetGUIObjectByName("tradeDialogPanel").hidden = false;
 }
 
+function updateTraderTexts()
+{
+	let traderNumber = Engine.GuiInterfaceCall("GetTraderNumber", g_ViewedPlayer);
+	Engine.GetGUIObjectByName("traderCountText").caption = getIdleLandTradersText(traderNumber) + "\n\n" + getIdleShipTradersText(traderNumber);
+}
+
+/**
+ * Code common to both the Barter Panel and the Trade/Barter Dialog, that
+ * only needs to be run when the panel or dialog is opened by the player.
+ *
+ * @param {string} resourceCode
+ * @param {number} idx - Element index within its set
+ * @param {string} prefix - Common prefix of the gui elements to be worked upon
+ */
+function barterOpenCommon(resourceCode, idx, prefix)
+{
+	let barterButton = {};
+	for (let action of g_BarterActions)
+		barterButton[action] = Engine.GetGUIObjectByName(prefix + action + "Button[" + idx + "]");
+
+	let resource = getLocalizedResourceName(g_ResourceData.GetNames()[resourceCode], "withinSentence");
+	barterButton.Buy.tooltip = sprintf(translate("Buy %(resource)s"), { "resource": resource });
+	barterButton.Sell.tooltip = sprintf(translate("Sell %(resource)s"), { "resource": resource });
+
+	barterButton.Sell.onPress = function() {
+		g_BarterSell = resourceCode;
+		updateSelectionDetails();
+		updateBarterButtons();
+	};
+}
+
+/**
+ * Code common to both the Barter Panel and the Trade/Barter Dialog, that
+ * needs to be run on simulation update and when relevant hotkeys
+ * (i.e. massbarter) are pressed.
+ *
+ * @param {string} resourceCode
+ * @param {number} idx - Element index within its set
+ * @param {string} prefix - Common prefix of the gui elements to be worked upon
+ * @param {number} player
+ */
+function barterUpdateCommon(resourceCode, idx, prefix, player)
+{
+	let barterButton = {};
+	let barterIcon = {};
+	let barterAmount = {};
+	for (let action of g_BarterActions)
+	{
+		barterButton[action] = Engine.GetGUIObjectByName(prefix + action + "Button[" + idx + "]");
+		barterIcon[action] = Engine.GetGUIObjectByName(prefix + action + "Icon[" + idx + "]");
+		barterAmount[action] = Engine.GetGUIObjectByName(prefix + action + "Amount[" + idx + "]");
+	}
+	let selectionIcon = Engine.GetGUIObjectByName(prefix + "SellSelection[" + idx + "]");
+
+	let amountToSell = g_BarterResourceSellQuantity;
+	if (Engine.HotkeyIsPressed("session.massbarter"))
+		amountToSell *= g_BarterMultiplier;
+
+	let isSelected = resourceCode == g_BarterSell;
+	let grayscale = isSelected ? "color:0 0 0 100:grayscale:" : "";
+
+	// Select color of the sell button
+	let neededRes = {};
+	neededRes[resourceCode] = amountToSell;
+	let canSellCurrent = Engine.GuiInterfaceCall("GetNeededResources", {
+		"cost": neededRes,
+		"player": player
+	}) ? "color:255 0 0 80:" : "";
+
+	// Select color of the buy button
+	neededRes = {};
+	neededRes[g_BarterSell] = amountToSell;
+	let canBuyAny = Engine.GuiInterfaceCall("GetNeededResources", {
+		"cost": neededRes,
+		"player": player
+	}) ? "color:255 0 0 80:" : "";
+
+	barterIcon.Sell.sprite = canSellCurrent + "stretched:" + grayscale + "session/icons/resources/" + resourceCode + ".png";
+	barterIcon.Buy.sprite = canBuyAny + "stretched:" + grayscale + "session/icons/resources/" + resourceCode + ".png";
+
+	barterAmount.Sell.caption = "-" + amountToSell;
+	let prices = GetSimState().barterPrices;
+	barterAmount.Buy.caption = "+" + Math.round(prices.sell[g_BarterSell] / prices.buy[resourceCode] * amountToSell);
+
+	barterButton.Buy.onPress = function() { 
+		Engine.PostNetworkCommand({
+			"type": "barter",
+			"sell": g_BarterSell,
+			"buy": resourceCode,
+			"amount": amountToSell
+		});
+	};
+
+	barterButton.Buy.hidden = isSelected;
+	barterButton.Buy.enabled = controlsPlayer(player);
+	barterButton.Sell.hidden = false;
+	selectionIcon.hidden = !isSelected;
+}
+
+function updateBarterButtons()
+{
+	let canBarter = GetSimState().players[g_ViewedPlayer].canBarter;
+	Engine.GetGUIObjectByName("barterNoMarketsMessage").hidden = canBarter;
+	Engine.GetGUIObjectByName("barterResources").hidden = !canBarter;
+	Engine.GetGUIObjectByName("barterHelp").hidden = !canBarter;
+
+	if (!canBarter)
+		return;
+
+	let resCodes = g_ResourceData.GetCodes();
+	for (let i = 0; i < resCodes.length; ++i)
+		barterUpdateCommon(resCodes[i], i, "barter", g_ViewedPlayer);
+}
+
 function getIdleLandTradersText(traderNumber)
 {
 	let active = traderNumber.landTrader.trading;
Index: ps/trunk/binaries/data/mods/public/gui/session/selection_panels.js
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/session/selection_panels.js
+++ ps/trunk/binaries/data/mods/public/gui/session/selection_panels.js
@@ -33,8 +33,6 @@
 
 let g_SelectionPanels = {};
 
-let g_BarterSell;
-
 g_SelectionPanels.Alert = {
 	"getMaxNumberOfItems": function()
 	{
@@ -104,86 +102,19 @@
 	"conflictsWith": ["Alert", "Garrison"],
 	"getItems": function(unitEntStates)
 	{
-		if (unitEntStates.every(state => !state.barterMarket))
+		// If more than `rowLength` resources, don't display icons.
+		if (unitEntStates.every(state => !state.isBarterMarket) || g_ResourceData.GetCodes().length > this.rowLength)
 			return [];
 		return g_ResourceData.GetCodes();
 	},
 	"setupButton": function(data)
 	{
-		// data.item is the resource name in this case
-		let button = {};
-		let icon = {};
-		let amount = {};
-		for (let a of BARTER_ACTIONS)
-		{
-			button[a] = Engine.GetGUIObjectByName("unitBarter" + a + "Button[" + data.i + "]");
-			icon[a] = Engine.GetGUIObjectByName("unitBarter" + a + "Icon[" + data.i + "]");
-			amount[a] = Engine.GetGUIObjectByName("unitBarter" + a + "Amount[" + data.i + "]");
-		}
-		let selectionIcon = Engine.GetGUIObjectByName("unitBarterSellSelection[" + data.i + "]");
-
-		let amountToSell = BARTER_RESOURCE_AMOUNT_TO_SELL;
-		if (Engine.HotkeyIsPressed("session.massbarter"))
-			amountToSell *= BARTER_BUNCH_MULTIPLIER;
-
-		if (!g_BarterSell)
-			g_BarterSell = g_ResourceData.GetCodes()[0];
-
-		amount.Sell.caption = "-" + amountToSell;
-		let prices;
-		for (let state of data.unitEntStates)
-			if (state.barterMarket)
-			{
-				prices = state.barterMarket.prices;
-				break;
-			}
-
-		amount.Buy.caption = "+" + Math.round(prices.sell[g_BarterSell] / prices.buy[data.item] * amountToSell);
+		barterOpenCommon(data.item, data.i, "unitBarter");
+		barterUpdateCommon(data.item, data.i, "unitBarter", data.player);
 
-		let resource = getLocalizedResourceName(g_ResourceData.GetNames()[data.item], "withinSentence");
-		button.Buy.tooltip = sprintf(translate("Buy %(resource)s"), { "resource": resource });
-		button.Sell.tooltip = sprintf(translate("Sell %(resource)s"), { "resource": resource });
-
-		button.Sell.onPress = function() {
-			g_BarterSell = data.item;
-			updateSelectionDetails();
-		};
-
-		button.Buy.onPress = function() {
-			Engine.PostNetworkCommand({
-				"type": "barter",
-				"sell": g_BarterSell,
-				"buy": data.item,
-				"amount": amountToSell
-			});
-		};
-
-		let isSelected = data.item == g_BarterSell;
-		let grayscale = isSelected ? "color: 0 0 0 100:grayscale:" : "";
-
-		// do we have enough of this resource to sell?
-		let neededRes = {};
-		neededRes[data.item] = amountToSell;
-		let canSellCurrent = Engine.GuiInterfaceCall("GetNeededResources", {
-			"cost": neededRes,
-			"player": data.player
-		}) ? "color:255 0 0 80:" : "";
-
-		// Let's see if we have enough resources to barter.
-		neededRes = {};
-		neededRes[g_BarterSell] = amountToSell;
-		let canBuyAny = Engine.GuiInterfaceCall("GetNeededResources", {
-			"cost": neededRes,
-			"player": data.player
-		}) ? "color:255 0 0 80:" : "";
-
-		icon.Sell.sprite = canSellCurrent + "stretched:" + grayscale + "session/icons/resources/" + data.item + ".png";
-		icon.Buy.sprite = canBuyAny + "stretched:" + grayscale + "session/icons/resources/" + data.item + ".png";
-
-		button.Buy.hidden = isSelected;
-		button.Buy.enabled = controlsPlayer(data.player);
-		button.Sell.hidden = false;
-		selectionIcon.hidden = !isSelected;
+		let button = {};
+		for (let action of g_BarterActions)
+			button[action] = Engine.GetGUIObjectByName("unitBarter" + action + "Button[" + data.i + "]");
 
 		setPanelObjectPosition(button.Sell, data.i, data.rowLength);
 		setPanelObjectPosition(button.Buy, data.i + data.rowLength, data.rowLength);
Index: ps/trunk/binaries/data/mods/public/gui/session/selection_panels_helpers.js
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/session/selection_panels_helpers.js
+++ ps/trunk/binaries/data/mods/public/gui/session/selection_panels_helpers.js
@@ -1,6 +1,3 @@
-const BARTER_RESOURCE_AMOUNT_TO_SELL = 100;
-const BARTER_BUNCH_MULTIPLIER = 5;
-const BARTER_ACTIONS = ["Sell", "Buy"];
 const GATE_ACTIONS = ["lock", "unlock"];
 
 const UPGRADING_NOT_STARTED = -2;
Index: ps/trunk/binaries/data/mods/public/gui/session/session.js
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/session/session.js
+++ ps/trunk/binaries/data/mods/public/gui/session/session.js
@@ -271,6 +271,8 @@
 	g_CivData = loadCivData();
 	g_CivData.gaia = { "Code": "gaia", "Name": translate("Gaia") };
 
+	g_BarterSell = g_ResourceData.GetCodes()[0];
+
 	initializeMusic(); // before changing the perspective
 
 	let gameSpeed = Engine.GetGUIObjectByName("gameSpeed");
@@ -398,6 +400,13 @@
 	Engine.GetGUIObjectByName("tradeHelp").tooltip = colorizeHotkey(
 		translate("Select one type of goods you want to modify by clicking on it (Pressing %(hotkey)s while selecting will also bring its share to 100%%) and then use the arrows of the other types to modify their shares."),
 		"session.fulltradeswap");
+
+	Engine.GetGUIObjectByName("barterHelp").tooltip = sprintf(
+		translate("Start by selecting the resource from the upper row that you wish to sell. Upon each press on one of the lower buttons, %(quantity)s of the upper resource will be sold for the displayed quantity of the lower. Press and hold %(hotkey)s to temporarily multiply all quantities by %(multiplier)s."), {
+			"quantity": g_BarterResourceSellQuantity,
+			"hotkey": colorizeHotkey("%(hotkey)s", "session.massbarter"),
+			"multiplier": g_BarterMultiplier
+		});
 }
 
 function initGUIHeroes(slot)
@@ -833,6 +842,12 @@
 	updateTimeNotifications();
 	updateIdleWorkerButton();
 
+	if (g_IsTradeOpen)
+	{
+		updateTraderTexts();
+		updateBarterButtons();
+	}
+
 	if (g_ViewedPlayer > 0)
 	{
 		let playerState = GetSimState().players[g_ViewedPlayer];
Index: ps/trunk/binaries/data/mods/public/gui/session/top_panel/button_trade.xml
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/session/top_panel/button_trade.xml
+++ ps/trunk/binaries/data/mods/public/gui/session/top_panel/button_trade.xml
@@ -5,9 +5,8 @@
 	style="iconButton"
 	tooltip_style="sessionToolTip"
 >
-	<!-- TODO make the button less ugly -->
 	<object size="0 0 100% 100%" name="tradeButtonImage" type="image" sprite="stretched:session/icons/economics.png" ghost="true"/>
-	<translatableAttribute id="tooltip">Trade</translatableAttribute>
+	<translatableAttribute id="tooltip">Barter &amp; Trade</translatableAttribute>
 	<action on="Press">
 		toggleTrade();
 	</action>
Index: ps/trunk/binaries/data/mods/public/gui/session/trade_window.xml
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/session/trade_window.xml
+++ ps/trunk/binaries/data/mods/public/gui/session/trade_window.xml
@@ -1,48 +1,111 @@
 <?xml version="1.0" encoding="utf-8"?>
 <object name="tradeDialogPanel"
-	size="50%-134 50%-130 50%+134 50%+100"
+	size="50%-80 50%-280 50%+80 50%+136"
 	type="image"
 	hidden="true"
 	sprite="ModernDialog"
 >
-	<object type="text" style="TitleText" size="50%-96 -16 50%+96 16">
-		<translatableAttribute id="caption">Trade</translatableAttribute>
+	<object type="text" size="50%-96 -16 50%+96 16" style="TitleText">
+		<translatableAttribute id="caption">Barter &amp; Trade Goods</translatableAttribute>
 	</object>
 
-	<!-- Trading goods -->
-	<object name="tradeGoods" size="20 50 100%-20 82">
-		<object name="tradeHeader" size="0 0 180 100%" type="text" style="ModernLabelText" text_align="left" ghost="true">
-			<translatableAttribute id="caption">Trading goods selection:</translatableAttribute>
+
+	<!-- Barter Goods -->
+	<object size="24 24 100%-24 33%">
+
+		<object type="text" size="8 0 100% 32" style="ModernLeftLabelText">
+			<translatableAttribute id="caption">Barter</translatableAttribute>
 		</object>
+		<object type="image" size="0 28 100% 29" sprite="ModernGoldLine"/>
+
+		<object size="0 38 100% 122">
+
+			<object type="text" size="0 0 60 41" style="ModernRightLabelText">
+				<translatableAttribute id="caption">Sell:</translatableAttribute>
+			</object>
+
+			<object type="text" size="0 100%-41 60 100%" style="ModernRightLabelText">
+				<translatableAttribute id="caption">Buy:</translatableAttribute>
+			</object>
+
+			<object name="barterNoMarketsMessage" type="text" size="72 0 100% 100%" style="ModernLabelText">
+				<translatableAttribute id="caption">No Markets Available</translatableAttribute>
+			</object>
+
+			<object name="barterResources" size="72 0 100% 100%">
+				<repeat count="10">
+					<object name="barterResource[n]" size="0 0 58 100%">
+
+						<!-- Sell -->
+						<object name="barterSellButton[n]" type="button" size="0 0 41 41" style="iconButton" tooltip_style="sessionToolTipBottomBold" hidden="true">
+							<object name="barterSellIcon[n]" type="image" size="3 3 100%-3 100%-3" ghost="true"/>
+							<object name="barterSellAmount[n]" type="text" size="0 0 100% 50%" style="resourceText" ghost="true"/>
+							<object name="barterSellSelection[n]" type="image" size="3 3 100%-3 100%-3" sprite="stretched:session/icons/corners.png" hidden="true" ghost="true"/>
+						</object>
+
+						<!-- Buy -->
+						<object name="barterBuyButton[n]" type="button" size="0 100%-41 41 100%" style="iconButton" tooltip_style="sessionToolTipBottomBold" hidden="true">
+							<object name="barterBuyIcon[n]" type="image" size="3 3 100%-3 100%-3" ghost="true"/>
+							<object name="barterBuyAmount[n]" type="text" size="0 0 100% 50%" style="resourceText" ghost="true"/>
+						</object>
 
-		<object size="180 0 100% 100%" name="tradeResources">
-			<repeat count="8">
-				<object name="tradeResource[n]" size="0 0 58 32">
-					<object name="tradeResourceButton[n]" size="4 0 36 100%" type="button" style="StoneButton">
-						<object name="tradeResourceIcon[n]" type="image" ghost="true"/>
-						<object name="tradeResourceSelection[n]" type="image" sprite="stretched:session/icons/corners.png" ghost="true"/>
-						<object name="tradeResourceText[n]" type="text" style="ModernLabelText" ghost="true"/>
-					</object>
-					<object name="tradeArrowUp[n]" size="36 0 52 50%" type="button" style="iconButton">
-						<object type="image" ghost="true" sprite="StoneArrowUp"/>
-					</object>
-					<object name="tradeArrowDn[n]" size="36 50% 52 100%" type="button" style="iconButton">
-						<object type="image" ghost="true" sprite="StoneArrowDn"/>
 					</object>
-				</object>
-			</repeat>
-			<object name="tradeHelp" size="100%-24 4 100% 28" enabled="false" type="button" style="StoneButton" tooltip_style="sessionToolTipBold">
-				<object size="20% 15% 80% 75%" type="image" ghost="true" sprite="iconInfoWhite"/>
+				</repeat>
+			</object>
+
+			<object name="barterHelp" type="button" size="100%-24 50%-12 100% 50%+12" style="StoneButton" tooltip_style="sessionToolTipBold" enabled="false">
+				<object type="image" size="20% 15% 80% 75%" sprite="iconInfoWhite" ghost="true"/>
 			</object>
+
 		</object>
 	</object>
 
-	<object name="tradeStatistics" size="20 90 100%-20 168">
-		<object name="landTraders" size="0 0 100% 50%" type="text" style="ModernLabelText" text_align="left" ghost="true" />
-		<object name="shipTraders" size="0 50% 100% 100%" type="text" style="ModernLabelText" text_align="left" ghost="true" />
+	<!-- Trading goods -->
+	<object size="24 33%+32 100%-24 100%-64">
+
+		<object type="text" size="8 0 100% 32" style="ModernLeftLabelText">
+			<translatableAttribute id="caption">Trade</translatableAttribute>
+		</object>
+		<object type="image" size="0 28 100% 29" sprite="ModernGoldLine"/>
+
+		<object name="tradeGoods" size="0 38 100% 70">
+
+			<object type="text" size="0 0 60 100%" style="ModernRightLabelText">
+				<!-- Translation: Used in the Trade Dialog -->
+				<translatableAttribute id="caption">Goods:</translatableAttribute>
+			</object>
+
+			<object name="tradeResources" size="72 0 100% 100%">
+				<repeat count="8">
+					<object name="tradeResource[n]" size="0 0 58 32">
+
+						<object name="tradeResourceButton[n]" type="button" size="4 0 36 100%" style="StoneButton">
+							<object name="tradeResourceIcon[n]" type="image" ghost="true"/>
+							<object name="tradeResourceSelection[n]" type="image" sprite="stretched:session/icons/corners.png" ghost="true"/>
+							<object name="tradeResourceText[n]" type="text" style="ModernLabelText" ghost="true"/>
+						</object>
+						<object name="tradeArrowUp[n]" type="button" size="36 0 52 50%" style="iconButton">
+							<object type="image" sprite="StoneArrowUp" ghost="true"/>
+						</object>
+						<object name="tradeArrowDn[n]" type="button" size="36 50% 52 100%" style="iconButton">
+							<object type="image" sprite="StoneArrowDn" ghost="true"/>
+						</object>
+
+					</object>
+				</repeat>
+			</object>
+
+			<object name="tradeHelp" type="button" size="100%-24 4 100% 28" style="StoneButton" tooltip_style="sessionToolTipBold" enabled="false">
+				<object type="image" size="20% 15% 80% 75%" sprite="iconInfoWhite" ghost="true"/>
+			</object>
+
+		</object>
+
+		<object name="traderCountText" type="text" size="8 88 100% 100%" style="ModernLeftTabLabelText"/>
+
 	</object>
 
-	<object size="50%-64 100%-50 50%+64 100%-22" type="button" style="StoneButton">
+	<object type="button" size="50%-64 100%-50 50%+64 100%-22" style="StoneButton">
 		<translatableAttribute id="caption">Close</translatableAttribute>
 		<action on="Press">closeTrade();</action>
 	</object>
Index: ps/trunk/binaries/data/mods/public/gui/session/unit_actions.js
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/session/unit_actions.js
+++ ps/trunk/binaries/data/mods/public/gui/session/unit_actions.js
@@ -1260,7 +1260,7 @@
 				return false;
 
 			return {
-				"tooltip": translate("Select trading goods"),
+				"tooltip": translate("Barter & Trade"),
 				"icon": "economics.png"
 			};
 		},
Index: ps/trunk/binaries/data/mods/public/simulation/components/GuiInterface.js
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/components/GuiInterface.js
+++ ps/trunk/binaries/data/mods/public/simulation/components/GuiInterface.js
@@ -121,7 +121,8 @@
 			"researchStarted": cmpTechnologyManager ? cmpTechnologyManager.GetStartedResearch() : null,
 			"researchedTechs": cmpTechnologyManager ? cmpTechnologyManager.GetResearchedTechs() : null,
 			"classCounts": cmpTechnologyManager ? cmpTechnologyManager.GetClassCounts() : null,
-			"typeCountsByClass": cmpTechnologyManager ? cmpTechnologyManager.GetTypeCountsByClass() : null
+			"typeCountsByClass": cmpTechnologyManager ? cmpTechnologyManager.GetTypeCountsByClass() : null,
+			"canBarter": Engine.QueryInterface(SYSTEM_ENTITY, IID_Barter).PlayerHasMarket(playerEnt)
 		});
 	}
 
@@ -150,9 +151,7 @@
 	ret.gameType = cmpEndGameManager.GetGameType();
 	ret.alliedVictory = cmpEndGameManager.GetAlliedVictory();
 
-	// Add bartering prices
-	let cmpBarter = Engine.QueryInterface(SYSTEM_ENTITY, IID_Barter);
-	ret.barterPrices = cmpBarter.GetPrices();
+	ret.barterPrices = Engine.QueryInterface(SYSTEM_ENTITY, IID_Barter).GetPrices();
 
 	// Add Resource Codes, untranslated names and AI Analysis
 	ret.resources = {
@@ -424,9 +423,9 @@
 	let ret = {
 		"armour": null,
 		"attack": null,
-		"barterMarket": null,
 		"buildingAI": null,
 		"heal": null,
+		"isBarterMarket": null,
 		"loot": null,
 		"obstruction": null,
 		"turretParent":null,
@@ -561,10 +560,7 @@
 		};
 
 	if (!cmpFoundation && cmpIdentity && cmpIdentity.HasClass("BarterMarket"))
-	{
-		let cmpBarter = Engine.QueryInterface(SYSTEM_ENTITY, IID_Barter);
-		ret.barterMarket = { "prices": cmpBarter.GetPrices() };
-	}
+		ret.isBarterMarket = true;
 
 	let cmpHeal = Engine.QueryInterface(ent, IID_Heal);
 	if (cmpHeal)
Index: ps/trunk/binaries/data/mods/public/simulation/components/tests/test_GuiInterface.js
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/components/tests/test_GuiInterface.js
+++ ps/trunk/binaries/data/mods/public/simulation/components/tests/test_GuiInterface.js
@@ -58,7 +58,8 @@
 			"buy": { "food": 150 },
 			"sell": { "food": 25 }
 		};
-	}
+	},
+	PlayerHasMarket: function () { return false; }
 });
 
 AddMock(SYSTEM_ENTITY, IID_EndGameManager, {
@@ -293,6 +294,7 @@
 			researchedTechs: {},
 			classCounts: {},
 			typeCountsByClass: {},
+			canBarter: false,
 			statistics: {
 				resourcesGathered: {
 					food: 100,
@@ -336,6 +338,7 @@
 			researchedTechs: {},
 			classCounts: {},
 			typeCountsByClass: {},
+			canBarter: false,
 			statistics: {
 				resourcesGathered: {
 					food: 100,
@@ -407,6 +410,7 @@
 			researchedTechs: {},
 			classCounts: {},
 			typeCountsByClass: {},
+			canBarter: false,
 			statistics: {
 				unitsTrained: 10,
 				unitsLost: 9,
@@ -463,6 +467,7 @@
 			researchedTechs: {},
 			classCounts: {},
 			typeCountsByClass: {},
+			canBarter: false,
 			statistics: {
 				unitsTrained: 10,
 				unitsLost: 9,
@@ -591,11 +596,9 @@
 TS_ASSERT_UNEVAL_EQUALS(cmp.GetExtendedEntityState(-1, 10), {
 	armour: null,
 	attack: null,
-	barterMarket: {
-		prices: { "buy": {"food":150}, "sell": {"food":25} },
-	},
 	buildingAI: null,
 	heal: null,
+	isBarterMarket: true,
 	loot: null,
 	obstruction: null,
 	turretParent: null,